Mosquitoes, Dogs and Heartworm Disease

Mosquitoes can carry the Heartworm parasite, a dangerous and common parasite that can affect your dog's heart and other organs. Get the facts on Heartworm prevalence, screening and prevention to keep your pup safe with the resources below, then learn more about other parasites that affect dogs at our parasite prevention and screening campaign.

We've compiled the Heartworm prevalence data from thousands of veterinary clinics to help you work with your veterinarian to protect dogs from Heartworm. Find out what the heartworm prevalence is in your own zip code: Check out our disease prevalence maps here>

This potentially-fatal parasite is easy to screen for and prevent, but much harder and expensive to treat. Find out what you can do to protect your dog and why your veterinarian may want to test for this common parasite. Read more>

Most of us are familiar with news stories describing how certain bacteria have become resistant to previously life-saving antibiotics. Now we have drug-resistant parasites, as in a newly discovered strain of super heartworms. Read more>